0.90 Ct. Green Sapphire from Madagascar

This transparent 0.90 carat fancy shape green sapphire is a study in balanced proportions and untreated origin, offered by The Natural Sapphire Company. The stone measures 6.60 x 4.55 x 3.50 mm, a profile that yields a practical table and a pleasing visual presence for a sub one carat gem. At 0.90 carat the weight is deliberately preserved to retain saturation and depth of tone, rather than to sacrifice color for size, which is one of the factors that elevates this sapphire into a premium tier. Origin is Madagascar, a source known for producing a range of high quality sapphires with fine color variety, and importantly this example is described as no enhancement, which increases its rarity and value in the market of natural colored stones.

The cutting style is a classical step cut rendered on a nonstandard or fancy outline, with precise, linear facets on both the crown and the pavilion that create broad, mirror like flashes rather than scintillation. The cutter has emphasized long, parallel facet planes, producing crisp facet junctions and a controlled light return suited to medium color intensity material. The table is proportioned to present the color block and internal clarity at first glance, while the pavilion facets descend with even angles to deliver face up depth. The measured pavilion depth at 3.50 mm corresponds to approximately sixty three percent of the mean face dimension, a proportion that maintains color saturation without inducing excessive windowing or dead zones. Symmetry is consistent across the girdle profile, and the excellent polish yields sharp facet reflections with minimal abrasion or polish haze.

Clarity is graded as very very slightly included, evaluated at eye level, which for a gem of this cut and size means the inclusions are not visible to the unaided eye under normal viewing, and they do not interfere with the green saturation or the step cut planes. Step cuts tend to reveal inclusions more readily than brilliant cuts, so the combination of a step cut and a very very slightly included clarity grade indicates careful material selection and skilled cutting to mask internal features within facet geometry. Color is described as green with medium intensity, an attractive balance between tone and saturation that reads lively in daylight and retains presence under incandescent lighting. Green coloration in corundum is generally produced by trace iron, and in some instances by a combination of iron and chromium, which can generate subtle directional color nuances. This sapphire displays a stable medium green, with modest pleochroic variation along its length axis that can produce slightly different green tones when the stone is tilted, a characteristic that can be used advantageously in bespoke jewelry design to create dynamic color shifts.

From a practical craftsmanship and setting standpoint, the 6.60 x 4.55 x 3.50 mm footprint and the 0.90 carat weight make this sapphire exceptionally versatile for ring centers in elegant, minimalist settings, or for a refined three stone or halo composition where the natural green will contribute a distinct focal tone. The step cut geometry pairs particularly well with bezel settings that protect the girdle while maintaining the faceted planes, or with four to six prong assemblies that secure the corners without obscuring the step face. Given the excellent polish and stable medium color intensity, the stone will present as a premium visual element in either contemporary or vintage inspired mounts. Corundum hardness of nine on the Mohs scale guarantees durable wearability for everyday pieces, though routine care to avoid hard knocks and to preserve the polish is advised. As specialists in natural sapphires, The Natural Sapphire Company can advise on mounting orientations to maximize face up color and on setting choices that preserve the integrity of this untreated, Madagascan sapphire.